This is a closed question, meaning that the person could simply just say yes or no. If you would like them to elaborate, you could then ask a 'probing question' such as: "What happened?"
This is an interesting question you ask and there are many ways to ask it. You can simple ask, "Has anyone ever been racist to you?" You are asking if they ever experienced racism and asking who has been racist all in one question.
この質問文は興味深い質問ですね。色々な尋ね方があります。
"Has anyone ever been racist to you?" （今までに誰かに人種差別されたことがありますか？）というシンプルな質問文ですが、
今までに差別されたことがあるか、またどんな人がそのようなことをしたのか、ということまで聞ける文章です。
Native speakers will say like this: “Have you ever been a victim of racism?”.
There are lots of other ways to say it, but this one is the most accurate and most commonly used.
Here is an example on how to use this in a conversation:
A: Have you ever been a victim of racism?
B: Luckily, no. But I have some friends that have experienced it first hand.
ネイティブスピーカーなら次のように言います。
“Have you ever been a victim of racism?”
（人種差別を受けたことはありますか）
他にもいろいろな言い方ができますが、これが最も正確で一般的です。
以下、会話例です。
A: Have you ever been a victim of racism?（人種差別を受けたことはありますか）
B: Luckily, no. But I have some friends that have experienced it first hand.（幸運なことにありません。ただ、友達には実際に経験したことのある人がいます）
Racism is also called 'racial discriminaton' when someone is when someone is not nice/nasty to someone because of their ethnic race/colour when someone says something to you is it said to them being 'racist'
To find out whether an individual has ever been a victim of racism, you could simply ask them a direct question, such as "Have you ever experienced racism?". This is direct question, which would most likely gain you the answer that you are looking for. Racism is an emotive subject, which means asking someone about the experiences they've had is asking them if they've experience discrimination.
人に人種差別を受けたことがあるかどうか尋ねたいなら、単刀直入に質問できます。例えば：
"Have you ever experienced racism?"（人種差別を受けたことがありますか）
これは直接的な質問で、あなたの聞きたいことが聞けます。
"racism"は感情的な話題です。これは「差別」を表します。
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